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| <?php | |
| /** | |
| * | |
| * This file is part of the phpBB Forum Software package. | |
| * | |
| * @copyright (c) phpBB Limited <https://www.phpbb.com> | |
| * @license GNU General Public License, version 2 (GPL-2.0) | |
| * | |
| * For full copyright and license information, please see | |
| * the docs/CREDITS.txt file. | |
| * | |
| */ | |
| namespace phpbb\db\migration\data\v32x; | |
| class user_notifications_table_remove_duplicates extends \phpbb\db\migration\migration | |
| { | |
| static public function depends_on() | |
| { | |
| return array( | |
| '\phpbb\db\migration\data\v32x\user_notifications_table_temp_index', | |
| ); | |
| } | |
| public function update_data() | |
| { | |
| return array( | |
| array('custom', array(array($this, 'remove_duplicates'))), | |
| ); | |
| } | |
| public function remove_duplicates() | |
| { | |
| $insert_buffer = new \phpbb\db\sql_insert_buffer($this->db, $this->table_prefix . 'user_notifications'); | |
| $sql = "SELECT item_type, item_id, user_id, method, MAX(notify) AS notify | |
| FROM {$this->table_prefix}user_notifications | |
| GROUP BY item_type, item_id, user_id, method | |
| HAVING COUNT(item_type) > 1"; | |
| $result = $this->sql_query($sql); | |
| while ($row = $this->db->sql_fetchrow($result)) | |
| { | |
| // Delete the duplicate entries | |
| $this->sql_query("DELETE FROM {$this->table_prefix}user_notifications | |
| WHERE user_id = {$row['user_id']} | |
| AND item_type = '{$row['item_type']}' | |
| AND method = '{$row['method']}'"); | |
| // And re-insert as a single one | |
| $insert_buffer->insert($row); | |
| } | |
| $this->db->sql_freeresult($result); | |
| } | |
| } |